# SDR SWAA010645

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 3, 2001
- Submitted: March 7, 2001
- Operation: Air carrier
- Aircraft: N716SW
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 27850
- Aircraft time: 9,855 hours, 6,345 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Regulator
- Part number: 107484
- Condition: Inoperative
- Location: Nr 1 Engine
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA010645

## Discrepancy

AIR TURNBACK.  AFTER TAKEOFF, NR 1 ENG PNEUMATIC BLEED C/B TRIPPED.  WOULD NOT RESET ON FIRST ATTEMPT AND BLEED AIR PRESS NOT STABLE.  REMOVED AND REPLACED NR 1 PNEUMATIC HIGH STAGE REGULATOR PER MM.

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